Corner piece



FIG. 1 is a perspective view of a corner piece of the present invention taken from the top and front;

FIG. 2 is a side view thereof taken from the rear;

FIG. 3 is a bottom view thereof;

FIG. 4 is another perspective view thereof taken from the top and rear;

FIG. 5 is another side view thereof taken from the front; and,

FIG. 6 is a top view thereof. 

The ornamental design for a corner piece, as shown and described. 